Supramolecular Assembly of pH-Sensitive Triphenylene Derived π-Gelators and Their Application as Molecular Template for the Preparation of Silica Nanotubes

Autor: Ignacio Muñoz Resta, Verónica E. Manzano, Florencia Cecchi, Carla C. Spagnuolo, Fabio D. Cukiernik, Pablo H. Di Chenna
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Gels, Vol 2, Iss 1, p 7 (2016)
Druh dokumentu: article
ISSN: 2310-2861
DOI: 10.3390/gels2010007
Popis: The gelation properties and mode of self-assembly of six asymmetrical hexaether triphenylene derivatives mono-functionalized with carboxylic and primary amine groups were investigated. The presence of a carboxylic and amine group attached to the triphenylene core generated stable, thermo- and pH-sensitive supramolecular π-organogels with a reversible response to both stimuli. In order to understand the gelation process, we studied the effect of the spacer length and found a different gelation scope for the acid and basic derivatives that accounts for a different supramolecular self-assembly. The presence of the basic group on the amino derivatives was used to guide and catalyze the templated in situ sol-gel polymerization of TEOS and allowed us, under controlled hydrolytic conditions, to prepare an entangled fibrillar network of silica nanotubes.
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